Delete residual keywords that aren't part of ControlMeasureLogData in ControlPointV0002.

      if (group.hasKeyword("Sample")) {

        double value = toDouble(group["Sample"][0]);

        measure.mutable_measurement()->set_sample(value);

        group.deleteKeyword("Sample");

      }

      if (group.hasKeyword("Line")) {

        double value = toDouble(group["Line"][0]);

        measure.mutable_measurement()->set_line(value);

        group.deleteKeyword("Line");

      }

      if (group.hasKeyword("SampleResidual")) {

        double value = toDouble(group["SampleResidual"][0]);

        measure.mutable_measurement()->set_sampleresidual(value);

        group.deleteKeyword("SampleResidual");

      }

      if (group.hasKeyword("LineResidual")) {

        double value = toDouble(group["LineResidual"][0]);

        measure.mutable_measurement()->set_lineresidual(value);

        group.deleteKeyword("LineResidual");

      }

      if (group.hasKeyword("Reference")) {

        if (group["Reference"][0].toLower() == "true") {

          m_pointData->set_referenceindex(groupIndex);